JPH0318662A - Nozzle structure of electromagnetic fuel injection valve - Google Patents
Nozzle structure of electromagnetic fuel injection valveInfo
- Publication number
- JPH0318662A JPH0318662A JP1135226A JP13522689A JPH0318662A JP H0318662 A JPH0318662 A JP H0318662A JP 1135226 A JP1135226 A JP 1135226A JP 13522689 A JP13522689 A JP 13522689A JP H0318662 A JPH0318662 A JP H0318662A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- nozzle
- atomizing
- injection hole
- injection valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 84
- 238000002347 injection Methods 0.000 title claims abstract description 50
- 239000007924 injection Substances 0.000 title claims abstract description 50
- 230000005284 excitation Effects 0.000 claims abstract description 5
- 239000007921 spray Substances 0.000 claims description 23
- 238000009434 installation Methods 0.000 claims 1
- 238000000889 atomisation Methods 0.000 abstract description 22
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 238000004080 punching Methods 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000005422 blasting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005291 magnetic effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
- F02M51/0675—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the valve body having cylindrical guiding or metering portions, e.g. with fuel passages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
- F02M51/0682—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the body being hollow and its interior communicating with the fuel flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/08—Injectors peculiar thereto with means directly operating the valve needle specially for low-pressure fuel-injection
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S239/00—Fluid sprinkling, spraying, and diffusing
- Y10S239/90—Electromagnetically actuated fuel injector having ball and seat type valve
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、エンジンに使用される電磁式燃料噴射弁（イ
ンジェクタとも呼ばれている。）のノズル構造に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a nozzle structure of an electromagnetic fuel injection valve (also called an injector) used in an engine.
［従来の技術］
この種の電磁式燃料噴射弁のノズル構造としては、同一
出願人が先に提案した特願昭６１−１９３５２２号（特
開昭６３−５０６６７号公報参照）がある。[Prior Art] As a nozzle structure of this type of electromagnetic fuel injection valve, there is Japanese Patent Application No. 193522/1988 (see Japanese Patent Laid-Open No. 50667/1989) previously proposed by the same applicant.
この先願のノズル構造は、ソレノイドコイルの励磁によ
る吸引力とスプリングによる反発力とによるパルプの往
復動によって液状燃料を間欠噴射させる電磁式燃料ＩＩ
射弁において、前記パルブから柱状に噴射した液状燃料
を霧化した状態で予め設定した一定距離の円形内に供給
するため、柱状体の軸心を中心とする円周上等間隔位置
に噴霧方向に対応して傾斜させた３個以上の噴霧孔を互
いに円周方向に隣接させた状態で形成しかつ前記３個以
上の噴霧孔によって柱状体軸心部分に形成ざれる円錐状
体の頂点部に前記パルプから柱状に噴射した液状燃料を
衝突させて霧化するため軸直角方向に所定の断面積を有
する衝突部を形成したノズルを、前記パルプの先方に取
付けたものである。The nozzle structure of this prior application is an electromagnetic fuel II that intermittently injects liquid fuel by reciprocating the pulp by the attraction force generated by the excitation of the solenoid coil and the repulsion force generated by the spring.
In the injection valve, in order to supply the liquid fuel injected in a columnar manner from the above-mentioned valve in an atomized state within a circle at a predetermined distance, the spray direction is set at equal intervals on the circumference centered on the axis of the columnar body. an apex portion of a conical body formed in a state in which three or more spray holes are formed adjacent to each other in the circumferential direction and are inclined corresponding to A nozzle having a collision part having a predetermined cross-sectional area in the direction perpendicular to the axis is attached to the front end of the pulp in order to collide and atomize the liquid fuel injected from the pulp in a columnar manner.
従来、このような電磁式燃料噴射弁のノズル構造におけ
るノズルは、高精度が要求されることから、通常その噴
霧孔が切削加工によって形成される。このためノズルの
前記衝突部は、前記円錐状体の頂点部をショットプラス
ト加工することによって形成されている。Conventionally, since the nozzle in the nozzle structure of such an electromagnetic fuel injection valve requires high precision, the spray hole is usually formed by cutting. For this reason, the collision portion of the nozzle is formed by shot-plast processing the apex portion of the conical body.
［発明が解決しようとする課題］
前記したように、ノズルの衝突部をショットプラス］一
加工により形或したノズル構造では、噴霧孔の加工精度
やショットブラスト加工法により、前記衝突部の形状、
いわゆる大きさのバラツキを規制することは困難である
。[Problems to be Solved by the Invention] As described above, in a nozzle structure in which the collision part of the nozzle is shaped by one process, the shape of the collision part,
It is difficult to control so-called size variations.
このため、衝突部の大きさによっては、燃料が霧化され
る場合と、霧化されない場合があり、また霧化された場
合でもその霧化状態にバラツキを生じることになった。Therefore, depending on the size of the collision part, the fuel may or may not be atomized, and even if it is atomized, the atomization state will vary.
本発明は前記した問題点を解決するためになされたもの
であり、その目的は、燃料を霧化するための衝突部の高
精度化を図ることにより、燃料の霧化のバラツキを防止
することのできる電磁式燃料噴射弁のノズル構造を提供
することにある。The present invention has been made to solve the above-mentioned problems, and its purpose is to prevent variations in fuel atomization by improving the precision of the collision part for atomizing fuel. An object of the present invention is to provide a nozzle structure for an electromagnetic fuel injection valve that can achieve the following.
［課題を解決するための手段］
前記課題を解決する本発明の１１磁式燃料噴射弁のノズ
ル構造は、ソレノイドコイルの励磁による吸引力とスプ
リングによる反発力とによるパルブの往復動によって燃
料を噴射孔から間欠噴射させる電磁式燃料噴射弁におい
て、前記パルプの先方に複数個の噴霧孔を有するノズル
を取付け、このノズルと前記噴射孔との間に噴射孔から
の燃料が衝突する燃料衝突部を有する霧化プレートを設
けたものである。[Means for Solving the Problems] The nozzle structure of the 11 magnetic fuel injection valve of the present invention that solves the above problems injects fuel by reciprocating the valve due to the attraction force caused by the excitation of the solenoid coil and the repulsion force caused by the spring. In an electromagnetic fuel injection valve that intermittently injects from a hole, a nozzle having a plurality of spray holes is attached to the front of the pulp, and a fuel collision part is provided between the nozzle and the injection hole where fuel from the injection hole collides. It is equipped with an atomization plate that has a
［作用］
前記手段によれば、電磁式燃料噴射弁のソレノイドコイ
ルが励磁されると、噴射孔から燃料が柱状に噴射され、
この燃料は霧化プレートの燃料衝突部に衝突して円周方
向にほぼ均等に霧化されるとともに、霧化した燃料はノ
ズルの複数個の噴霧孔に分散され、その噴霧孔を通して
噴出される。[Operation] According to the above means, when the solenoid coil of the electromagnetic fuel injection valve is excited, fuel is injected from the injection hole in a columnar manner,
This fuel collides with the fuel collision part of the atomization plate and is atomized almost uniformly in the circumferential direction, and the atomized fuel is dispersed into multiple spray holes of the nozzle and is jetted out through the spray holes. .
［実施例］
（第１実施例）
本発明の第１実施例の構成を第１〜５図によって説明す
る。[Example] (First Example) The configuration of a first example of the present invention will be explained with reference to FIGS. 1 to 5.
まず電磁式燃料噴射弁ＩＮＪについて、その側断面図を
示した第１図に基づいて述べる。インジェクタ本体１の
先端部に、パルプハウジング３がストツパ２を介して取
付けられている。パルプハウジング３は、その先端部に
噴射孔６、及びその噴射孔６の周辺に曲面形成されたシ
ート面７を有している。First, the electromagnetic fuel injection valve INJ will be described based on FIG. 1, which shows a side sectional view thereof. A pulp housing 3 is attached to the tip of the injector body 1 via a stopper 2. The pulp housing 3 has an injection hole 6 at its tip and a sheet surface 7 formed into a curved surface around the injection hole 6.
パルプハウジング３には、先端部にボール４を取付けた
パルプ５が軸方向に移動可能に取付けられている。パル
プ５は、ストツパ２の端面とパルプハウジング３のシー
ト面７との間でその移ｖＪ量が規υｊされる。すなわち
パルプ５が噴射孔６の方向に移ｖＪ（前進）して、パル
プ５のボール４が噴射孔６のシート面７に当接した状態
では、噴射孔６が閉じられ、噴割孔６からの燃料噴射が
停止される。またパルプ５が前記と反対方向に移動（後
退）して、パルブ５のフランジ８がストツパ２の端面に
当接した状態では、噴射孔６が開かれ、パルプ５内の燃
料通路１０．１１を通った燃料が噴射孔６から噴射され
る。A pulp 5 having a ball 4 attached to its tip is attached to the pulp housing 3 so as to be movable in the axial direction. The amount of movement vJ of the pulp 5 between the end surface of the stopper 2 and the seat surface 7 of the pulp housing 3 is regulated by υj. That is, when the pulp 5 moves vJ (advance) in the direction of the injection hole 6 and the ball 4 of the pulp 5 is in contact with the sheet surface 7 of the injection hole 6, the injection hole 6 is closed and the air is emitted from the injection hole 6. fuel injection is stopped. Further, when the pulp 5 moves in the opposite direction (retreats) and the flange 8 of the pulp 5 comes into contact with the end face of the stopper 2, the injection hole 6 is opened and the fuel passage 10, 11 in the pulp 5 is opened. The passed fuel is injected from the injection hole 6.
インジェクタ本体１の基端部内には、ソレノイドコイル
１４が燃料漏れ防止用Ｏリング１６を介して取付けられ
ている。ソレノイドコイル１４には、燃料供給バイブ兼
用強磁性材製固定鉄心１５が燃料漏れ防止用Ｏリング１
３を介して挿着されている。なおソレノイドコイル１４
は、コネクタ１２の端子２０を介して外部回路に接続さ
れる。A solenoid coil 14 is attached to the base end of the injector body 1 via an O-ring 16 for preventing fuel leakage. The solenoid coil 14 has a fixed iron core 15 made of ferromagnetic material that also serves as a fuel supply vibrator and an O-ring 1 for preventing fuel leakage.
It is inserted through 3. In addition, the solenoid coil 14
is connected to an external circuit via the terminal 20 of the connector 12.
パルプ５の後端部にはアーマチュア１７が取付けられて
いる。アーマチュア１７は、ソレノイドコイル１４の励
磁によって固定鉄心１５に吸引される。An armature 17 is attached to the rear end of the pulp 5. The armature 17 is attracted to the fixed iron core 15 by the excitation of the solenoid coil 14 .
前記固定鉄心１５内には、パイプ１８が位置調整後に外
部からポンチ等でかしめ付けられている。A pipe 18 is crimped into the fixed core 15 from the outside with a punch or the like after position adjustment.
このパイプ１８と前記アーマチュア１７との間には、ス
プリング１９が取付けられている。スプリング１９は、
アーマチュア１７とともにパルプ５に反吸引方向の付勢
力を付与し、パルプ５のボール４をパルプハウジング３
のシート面７に当接させる。A spring 19 is attached between the pipe 18 and the armature 17. The spring 19 is
Together with the armature 17, a biasing force in the anti-suction direction is applied to the pulp 5, and the balls 4 of the pulp 5 are pushed into the pulp housing 3.
The sheet surface 7 is brought into contact with the sheet surface 7 of the
前記固定鉄心１５の後端部のプラグ２８には、ストレー
ナ２９が配置されているとともに、燃料供給用ホース（
図示しない）が接続される。A strainer 29 is arranged in the plug 28 at the rear end of the fixed iron core 15, and a fuel supply hose (
(not shown) are connected.
次に、前記電磁式燃料噴射弁ＩＮＪの先端部におけるノ
ズル構造について、前記第１図の他、ノズルの正面図を
示した第２図、第２図の■一■轢断面図を示した第３図
を参照して詳述する。Next, regarding the nozzle structure at the tip of the electromagnetic fuel injection valve INJ, in addition to FIG. 1, FIG. 2 shows a front view of the nozzle, and FIG. This will be explained in detail with reference to FIG.
前記インジェクタ本体１の先端部には、ノズル２１が前
記パルプハウジング３と共に取付けられている。A nozzle 21 is attached to the tip of the injector main body 1 together with the pulp housing 3.
ノズル２１には、柱状体２３の軸心を中心とする円周上
等Ｗ５ｌＩｉｉｉ位置に噴霧方向に対応して傾斜した３
個の噴霧孔２２が形成されている。この噴霧孔２２は、
バルプハウジング３の噴射孔６から柱状に噴射された液
状燃料を霧化した状態で予め設定した一定距離の円形内
に供給する。The nozzle 21 has 3 inclines at a position W5lIiii on the circumference centered on the axis of the columnar body 23 and inclined in accordance with the spray direction.
spray holes 22 are formed. This spray hole 22 is
Liquid fuel injected in a columnar manner from the injection holes 6 of the bulb housing 3 is atomized and supplied within a circle at a predetermined distance.
パルプハウジング３の噴射孔６とノズル２１の噴霧孔２
２との間には合流部２７が形成されている。Injection hole 6 of pulp housing 3 and spray hole 2 of nozzle 21
A confluence section 27 is formed between the two.
この合流部２７におけるノズル２１側の端面には、円形
の霧化プレート３１が圧入または部分的なコーキングに
よって固着されている。A circular atomization plate 31 is fixed to the end face of the merging portion 27 on the nozzle 21 side by press-fitting or partial caulking.
第３図の他、第３図のｒＶ − ＩＶ線断面図を示した
第４図及び霧化プレートの平面図を示した第５図におい
て、霧化プレート３１は、前記ノズル２１の噴霧孔２２
と合致する３個の噴霧孔３２を有し、各噴霧孔３２を区
分する細い梁部３３の中心部に燃料衝突部３４が形成さ
れてなる。この燃料衝突部３４に前記パルプハウジング
３の噴射孔６から柱状に噴射した燃料が衝突し、この衝
突により燃料が霧化される。In addition to FIG. 3, in FIG. 4, which shows a sectional view taken along the line rV-IV in FIG.
The fuel collision part 34 is formed in the center of a thin beam part 33 that separates each spray hole 32. The fuel injected in a columnar manner from the injection holes 6 of the pulp housing 3 collides with this fuel collision portion 34, and the fuel is atomized by this collision.
前記燃料衝突部３４は、所定面積、すなわち第５図に示
すように直径φａの内接円を有している。The fuel collision portion 34 has a predetermined area, that is, an inscribed circle with a diameter φa as shown in FIG.
この燃料衝突部３４及び前記梁部３３により、前記ノズ
ル２１の柱状休２３の頂部が覆われている。The fuel colliding portion 34 and the beam portion 33 cover the top of the columnar rest 23 of the nozzle 21 .
この場合、第４図に示すように霧化プレート３１の噴霧
孔３２は、ノズル２１の噴霧孔２２・と合致しておりか
つノズル２１の噴霧孔２２より若干小さい相似形をもっ
て形成ざれている。In this case, as shown in FIG. 4, the spray holes 32 of the atomizing plate 31 are formed to have a similar shape that coincides with the spray holes 22 of the nozzle 21 and is slightly smaller than the spray holes 22 of the nozzle 21.
前記霧化プレート３１は、例えば鋼板林をプレス加工、
すなわち打抜き加工することによって形成されている。The atomization plate 31 is made by pressing a steel plate, for example.
That is, it is formed by punching.
このため、従来のショットブラスト加工による衝突部の
形成よりも、高精度の燃料衝突部３４を容易に得ること
が可能である。また燃料衝突部３４とともに噴霧孔３２
も高精度に形成することができる。Therefore, it is possible to easily obtain the fuel collision part 34 with higher precision than by forming the collision part by conventional shot blasting. In addition, the fuel collision part 34 and the spray hole 32
can also be formed with high precision.
前記した電磁式燃料噴射弁のノズル構造において、′Ｉ
１磁式燃料噴射弁ＩＮＪのソレノイドコイル１４が無励
磁の状態では、燃料供給用ホースからの燃料が固定鉄心
１５内へ圧送されても、スプリング１９の付勢力によっ
てパルプ５が閉じているため、噴射孔６から燃料は噴射
されない。In the nozzle structure of the electromagnetic fuel injection valve described above, 'I
1 When the solenoid coil 14 of the magnetic fuel injection valve INJ is not energized, even if the fuel from the fuel supply hose is forced into the fixed iron core 15, the pulp 5 is closed by the urging force of the spring 19. No fuel is injected from the injection hole 6.
そして、ソレノイドコイル１４が励磁されると、スプリ
ング１９の付勢力に抗してアーマチュア１７が固定鉄心
１５に吸引ざれ、パルプ５が開かれる。すると、燃料供
給用ホースからの燃料がメータリング（計１）された状
態で、噴射孔６から柱状（中実〉噴霧となってノズル２
１の合流部２７に向けて噴射される。Then, when the solenoid coil 14 is excited, the armature 17 is attracted to the fixed iron core 15 against the biasing force of the spring 19, and the pulp 5 is opened. Then, while the fuel from the fuel supply hose is metered (total 1), it becomes a columnar (solid) spray from the injection hole 6 and is sent to the nozzle 2.
The fuel is injected toward the merging section 27 of No. 1.
この燃料は、霧化プレート３１の燃料衝突部３４に衝突
することにより、微粒化されて噴霧状となる。すなわち
霧化される。その後、ノズル２１の各噴霧孔２２に対し
等量に分岐されて、各噴霧孔２２から噴出ざれる。By colliding with the fuel collision part 34 of the atomization plate 31, this fuel is atomized and becomes atomized. In other words, it is atomized. Thereafter, it is branched in equal amounts to each spray hole 22 of the nozzle 21 and is ejected from each spray hole 22 .
なお霧化プレート３１による燃料の霧化の良否は、霧化
プレート３１の燃料衝突部３４の大きざによって影響さ
れる。例えば、燃料衝突部３４の内接円の直径φａが非
常に小さいと燃料が微粒化されず、本実施例の場合、噴
射孔６の直径０．４厘に対して燃料衝突部３４の内接円
の直径φａが０．１履付近以上となると噴射燃料が微粒
化され始め、霧化の改善効果が現れる。Note that the quality of fuel atomization by the atomization plate 31 is influenced by the size of the fuel collision portion 34 of the atomization plate 31. For example, if the diameter φa of the inscribed circle of the fuel collision part 34 is very small, the fuel will not be atomized, and in the case of this embodiment, the inscribed circle of the fuel collision part 34 is When the diameter φa of the circle becomes around 0.1 or more, the injected fuel begins to be atomized, and the effect of improving atomization appears.
〔第２実施例〕
次に、本発明の第２実施例の構成を第６図によって説明
する。[Second Embodiment] Next, the configuration of a second embodiment of the present invention will be described with reference to FIG. 6.
本実施例は、前記ｗ４１実施例の一部を変更したもので
あるから、その変更部分について詳述し、その他の構成
についてはその説明を省略する。Since this embodiment is a partial modification of the W41 embodiment, the modified portion will be described in detail, and the description of the other configurations will be omitted.
本例は、第１実施例における霧化プレート３１をノズル
２１に対し約６０’位相をずらした状態で組付けたもの
である。すなわち、ノズル２１の噴霧孔２２の略中央部
に霧化プレート３１の梁部３３が位ｄし、その噴霧孔２
２が梁部３３によつて仕切られている。なお本例の場合
も、ノズル２１の柱状体２３の頂部は、前記実施例と同
様、霧化プレート３１の燃料衝突部３４によって覆われ
ている。In this example, the atomizing plate 31 in the first example is assembled with the nozzle 21 shifted in phase by about 60'. That is, the beam portion 33 of the atomization plate 31 is positioned approximately at the center of the spray hole 22 of the nozzle 21, and the spray hole 2
2 are partitioned by a beam portion 33. In the case of this example as well, the top of the columnar body 23 of the nozzle 21 is covered by the fuel collision part 34 of the atomization plate 31, as in the previous example.
本例において、電磁式燃利噴射弁ＩＮＪの噴射孔６から
噴射された燃料は、霧化プレート３１の燃料衝突部３４
に衝突後、梁部３４によって３つに分けられ、さらにノ
ズル２１の柱状体２３の仕切りによりそれぞれ２つに分
けられて別々の噴霧孔２２に導入される。従って第１実
施例と比べ、燃料はより微粒化されることになる。In this example, the fuel injected from the injection hole 6 of the electromagnetic fuel injection valve INJ is transferred to the fuel collision portion 34 of the atomization plate 31.
After colliding with , it is divided into three parts by the beam part 34 , further divided into two parts by the partition of the columnar body 23 of the nozzle 21 , and introduced into separate spray holes 22 . Therefore, compared to the first embodiment, the fuel is more atomized.
なお、本発明は、前記実施例に限定されるものではなく
、本発明の要旨を逸脱しない範囲における変更が可能で
ある。It should be noted that the present invention is not limited to the embodiments described above, and modifications can be made within the scope of the invention.
Ｅ発′明の効果］
本発明の電磁式燃料噴射弁のノズル構造によれば、燃料
噴射弁の噴射孔とパルプの先方に取付けたノズルとの間
に、噴射孔からの燃料が衝突する燃料衝突部を有する霧
化プレートを設けるものであるから、前記霧化プレート
を例えばプレス加工することにより、従来のショットブ
ラスト加工によるものに比し燃料衝突部を高精度をもっ
て形成することが可能となり、この霧化プレートの燃料
衝突部によって、噴射孔から噴射された燃料を良好に霧
化することができる。よって燃料の霧化のバラツキを防
止し、その霧化の安定化を図ることができる。E'Effects of the Invention] According to the nozzle structure of the electromagnetic fuel injection valve of the present invention, the fuel from the injection hole collides between the injection hole of the fuel injection valve and the nozzle attached to the front end of the pulp. Since an atomization plate having a collision part is provided, by press working the atomization plate, for example, it becomes possible to form the fuel collision part with higher precision compared to conventional shot blasting. The fuel colliding portion of the atomization plate allows the fuel injected from the injection holes to be atomized well. Therefore, variations in fuel atomization can be prevented and the atomization can be stabilized.
第１〜５図は本発明の第１実施例を示すもので、第１図
は電磁式燃料噴射弁の断面図、第２図はノズルの正面図
、第３図は第２図の■−■轢断面図、第４図は第３図の
ｒＶ−ＩＶ線断面図、第５図は霧化プレートの平面図で
ある。第６図は第２実施例のを示す要部の平断面図であ
る。
５・・・パルプ
１４・・・ソレノイドコイル
１９・・・スプリング
２１・・・ノズル
２２・・・噴霧孔
３１・・・霧化プレート
３４・・・燃料衝突部
ＩＮＪ・・・電磁式燃料噴射弁1 to 5 show a first embodiment of the present invention, in which FIG. 1 is a sectional view of an electromagnetic fuel injection valve, FIG. 2 is a front view of a nozzle, and FIG. 3 is a (2) A cross-sectional view of the track, FIG. 4 is a cross-sectional view taken along the line rV-IV in FIG. 3, and FIG. 5 is a plan view of the atomizing plate. FIG. 6 is a plan sectional view of the main parts of the second embodiment. 5... Pulp 14... Solenoid coil 19... Spring 21... Nozzle 22... Spray hole 31... Atomization plate 34... Fuel collision part INJ... Electromagnetic fuel injection valve
Claims (1)
る反発力とによるパルプの往復動によつて燃料を噴射孔
から間欠噴射させる電磁式燃料噴射弁において、前記パ
ルプの先方に複数個の噴霧孔を有するノズルを取付け、
このノズルと前記噴射孔との間に噴射孔からの燃料が衝
突する燃料衝突部を有する霧化プレートを設けた電磁式
燃料噴射弁のノズル構造。In an electromagnetic fuel injection valve that intermittently injects fuel from an injection hole by the reciprocating movement of pulp due to the attraction force generated by the excitation of a solenoid coil and the repulsion force generated by a spring, a nozzle having a plurality of spray holes at the tip of the pulp is provided. installation,
A nozzle structure for an electromagnetic fuel injection valve, which includes an atomizing plate having a fuel collision portion between the nozzle and the injection hole, where fuel from the injection hole collides with the fuel from the injection hole.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1135226A JPH0318662A (en) | 1989-05-29 | 1989-05-29 | Nozzle structure of electromagnetic fuel injection valve |
| US07/496,317 US5062573A (en) | 1989-05-29 | 1990-03-20 | Nozzle structure in electromagnetic fuel injector |
| DE4013926A DE4013926A1 (en) | 1989-05-29 | 1990-04-30 | NOZZLE FOR ELECTROMAGNETIC FUEL INJECTION |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1135226A JPH0318662A (en) | 1989-05-29 | 1989-05-29 | Nozzle structure of electromagnetic fuel injection valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0318662A true JPH0318662A (en) | 1991-01-28 |
Family
ID=15146764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1135226A Pending JPH0318662A (en) | 1989-05-29 | 1989-05-29 | Nozzle structure of electromagnetic fuel injection valve |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5062573A (en) |
| JP (1) | JPH0318662A (en) |
| DE (1) | DE4013926A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012097642A (en) * | 2010-11-01 | 2012-05-24 | Mitsubishi Electric Corp | Fuel injection valve |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5218943A (en) * | 1991-01-07 | 1993-06-15 | Toyota Jidosha Kabushiki Kaisha | Fuel injection apparatus for internal combustion engine |
| DE4131500A1 (en) * | 1991-09-21 | 1993-03-25 | Bosch Gmbh Robert | ELECTROMAGNETICALLY OPERATED INJECTION VALVE |
| JP3053934B2 (en) * | 1991-10-31 | 2000-06-19 | 愛三工業株式会社 | Multi-hole injector |
| WO1993020349A1 (en) * | 1992-04-01 | 1993-10-14 | Siemens Automotive L.P. | Injector valve seat with recirculation trap |
| US5435884A (en) * | 1993-09-30 | 1995-07-25 | Parker-Hannifin Corporation | Spray nozzle and method of manufacturing same |
| US5707012A (en) * | 1993-12-21 | 1998-01-13 | Robert Bosch Gmbh | Atomizing sieve and fuel injection valve having an atomizing sieve |
| JPH07259701A (en) * | 1994-03-25 | 1995-10-09 | Keihin Seiki Mfg Co Ltd | Electromagnetic fuel injection valve |
| US5713327A (en) * | 1997-01-03 | 1998-02-03 | Tilton; Charles L. | Liquid fuel injection device with pressure-swirl atomizers |
| WO1999009324A1 (en) * | 1997-08-15 | 1999-02-25 | Fujikin Incorporated | Orifice for pressure type flow rate control unit and process for manufacturing orifice |
| JP2000064929A (en) * | 1998-08-24 | 2000-03-03 | Mitsubishi Electric Corp | Fuel injection valve |
| DE10109611A1 (en) * | 2001-02-28 | 2002-09-05 | Bosch Gmbh Robert | Fuel injector |
| US7003880B2 (en) * | 2001-10-05 | 2006-02-28 | Denso Corporation | Injector nozzle and method of manufacturing injector nozzle |
| US6802456B2 (en) * | 2001-10-12 | 2004-10-12 | Microenergy Technologies, Inc | Electrostatic atomizer and method of producing atomized fluid sprays |
| US20090145977A1 (en) * | 2007-12-05 | 2009-06-11 | Jan Ihle | Injection molded nozzle and injector comprising the injection molded nozzle |
| US9034210B2 (en) * | 2007-12-05 | 2015-05-19 | Epcos Ag | Feedstock and method for preparing the feedstock |
| US20090148657A1 (en) * | 2007-12-05 | 2009-06-11 | Jan Ihle | Injection Molded PTC-Ceramics |
| US20090148802A1 (en) * | 2007-12-05 | 2009-06-11 | Jan Ihle | Process for heating a fluid and an injection molded molding |
| US20090146042A1 (en) * | 2007-12-05 | 2009-06-11 | Jan Ihle | Mold comprising a ptc-ceramic |
| US9518547B2 (en) * | 2015-05-07 | 2016-12-13 | Caterpillar Inc. | Fuel injector including extensions for split spray angles |
| WO2017066407A1 (en) * | 2015-10-16 | 2017-04-20 | Nostrum Energy Pte. Ltd. | Method of modifying a conventional direct injector and modified injector assembly |
| KR101914291B1 (en) * | 2016-06-17 | 2018-11-01 | 윈비즈 주식회사 | Portable spray apparatus |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4057190A (en) * | 1976-06-17 | 1977-11-08 | Bendix Corporation | Fuel break-up disc for injection valve |
| US4030668A (en) * | 1976-06-17 | 1977-06-21 | The Bendix Corporation | Electromagnetically operated fuel injection valve |
| GB8320323D0 (en) * | 1983-07-28 | 1983-09-01 | Lucas Ind Plc | Fuel injector |
| JPS6350667A (en) * | 1986-08-19 | 1988-03-03 | Aisan Ind Co Ltd | Nozzle structure for electromagnetic type fuel injection valve |
| DE8632002U1 (en) * | 1986-11-28 | 1988-03-31 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection valve |
| DE3723698C2 (en) * | 1987-07-17 | 1995-04-27 | Bosch Gmbh Robert | Fuel injector and method for adjusting it |
| DE3841142C2 (en) * | 1988-12-07 | 1994-09-29 | Bosch Gmbh Robert | Injector |
| JPH06350667A (en) * | 1993-06-11 | 1994-12-22 | Matsushita Electric Ind Co Ltd | Satellite communication terminal equipment |
-
1989
- 1989-05-29 JP JP1135226A patent/JPH0318662A/en active Pending
-
1990
- 1990-03-20 US US07/496,317 patent/US5062573A/en not_active Expired - Fee Related
- 1990-04-30 DE DE4013926A patent/DE4013926A1/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012097642A (en) * | 2010-11-01 | 2012-05-24 | Mitsubishi Electric Corp | Fuel injection valve |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4013926A1 (en) | 1990-12-06 |
| DE4013926C2 (en) | 1992-11-26 |
| US5062573A (en) | 1991-11-05 |
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